P. Keklikoglou et al., Crystallographic study of hydrated polycrystalline M-(beta '',beta)-ferrites (M = K+, Mg2+, Ca2+), SOL ST ION, 136, 2000, pp. 441-446
A complete crystallographic study and the ionic distribution in the conduct
ion layers, including H2O, of polycrystalline Cd2+-stabilised K+-beta/beta
" -ferrite, and Mg2+, Ca2+ ionic exchange derivatives is presented. Both th
e parent compound and the ionic exchange products are not single phases, bu
t present a mixture of the beta "- and beta -phases. The weight percent of
water molecules calculated from Rietveld analysis is 0.96% for K+, and 2.41
% for Mg2+ and Ca2+, in good agreement with the weight losses measured by t
hermogravimetric analysis of 1.5, 2.2 and 2.5%, respectively. (C) 2000 Else
vier Science BN. All rights reserved.